Born into a family of filmmakers, Law Chi is the grand-nephew of producer-director and Hong Kong film pioneer Chiu Shu-sun. He entered the industry in the late 1940s, performing continuity in Cantonese films for such directors as Ng Wui, Moon Kwan and his granduncle Chiu, working his way up to assistant director in the mid-1950s

In 1959, Law made his directorial debut with a Chaozhou dialect film. He then directed the Cantonese wuxia film Tian Shan Gibbon Girl (1961), starring a young Josephine Siao. Thus began a long and prolific directing career, with dozens of titles in Cantonese, Mandarin and Chaozhou. One of his most noted film is the Jane Bond film The Dark Heroine Mu Lanhua (1966), written by the renowned novelist and scriptwriter Ni Kuang. Another highlight of his career is the kung-fu film, Wong Fei-Hung: Bravely Crushing the Fire Formation (1970), one of the best works in the Wong Fei-Hung series.